Large steel pipe inner opening welding seam polishing machine

Abstract

The invention belongs to the technical field of steel pipe machining equipment, and particularly relates to a large steel pipe inner opening welding seam polishing machine. The large steel pipe inner opening welding seam polishing machine comprises a tensioning component, a rotating component and a polishing component. According to the large steel pipe inner opening welding seam polishing machine, after the polishing machine is fixed into a large steel pipe through the tensioning component, the rotating component drives the polishing component to rotate, the polishing component rotates around the axis of the large steel pipe, then the polishing component polishes away redundant metal at the weld joint while rotating, so that the surplus height of the weld joint meets the technical requirement; the polishing machine solves the problems that the conventional polishing mostly adopts manual polishing, the welding seam polishing degree cannot be controlled, and excessive local polishing and insufficient local polishing are easily caused; moreover, the polishing machine avoids the situation that the welding seam strength is reduced due to excessive local polishing, further guarantees the welding seam strength, and avoids the situation that the welding seam is too large in local surplus reinforcement due to insufficient local polishing, therefore, the frictional resistance of the medium during flowing is reduced, and the conveying energy consumption is reduced; and manual polishing is not needed, so that the physical strength expenditure of people is saved, and the labor cost is further saved.

Description

technical field [0001] The invention belongs to the technical field of steel pipe processing equipment, in particular to a large-scale steel pipe inner mouth weld seam grinding machine. Background technique [0002] The steel pipe is a steel with a hollow section whose length is much longer than the diameter or circumference. According to the cross-sectional shape, it is divided into circular, square, rectangular and special-shaped steel pipes; steel pipes are widely used in conveying pipelines, and are often used when the length of the steel pipe is not enough and needs to be extended. The welding method requires grinding the weld reinforcement in the pipeline after welding so that the weld does not affect the subsequent processing of the steel pipe and the use of steel pipe products. [0003] In the prior art, the welds in large-scale steel pipes are mostly manually polished, and the degree of weld grinding cannot be controlled during manual grinding, which may easily caus...

AI Technical Summary

Problems solved by technology

The invention is mainly used to solve the problem in the prior art that the grinding degree of the weld seam cannot be controlled during manual grinding, which may easily cause local excessive grinding, reduce the strength of the weld seam, and further reduce the connection strength of the steel pipe, and manual grinding may also easily cause local grinding. Sufficiently, the local reinforcement of the weld is too large, increasing the frictional resistance when the medium flows, and increasing the energy consumption of the transportation

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